Comments on: O Level Chemistry: Preparation of Salts

By: Melvin

Melvin — Thu, 08 Sep 2011 11:28:01 +0000

A is out cuz although copper sulfate is formed but it wil dissolve in the aqueous solutions.
C is definitely out cuz copper is unreactive wif an acid
D is out too because ammonium sulfate is aqueous, so the copper sulfate formed wil dissolve in the water and a precipitate cant be obtained
Hence B is the answer

By: shaq

shaq — Wed, 18 May 2011 19:22:30 +0000

copper (ii) carbonate and sulphuric acid

By: FCY

FCY — Sun, 06 Feb 2011 07:07:56 +0000

Yeah,my answer is D TOO. You Will require Copper(II) oxide and ammonium sulphate to form Copper(II) sulphate.

By: Amanda

Amanda — Mon, 27 Sep 2010 12:59:44 +0000

THE ANSWER IS B To prepare a soluble salt, you need an insoluble reagent with an acid. The answer cant be C as Copper is too unreatcive to react with acid.
Metal carbonate + Acid -> Salt + Carbon dioxide + Water

By: mar

mar — Mon, 20 Sep 2010 06:38:49 +0000